Prep for Part 4

LICENSE.md

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org/>

README.md

@@ -0,0 +1,5 @@
+# Geometry Grass in Godot
+
+This respository contains the project which is developed in my "Grass Rendering Series". To access the state of the project at the start or end of a given tutorial, check out that commit.
+
+If you want to follow along, start here: https://hexaquo.at/pages/grass-rendering-series-part-1-theory/

environment.tres

@@ -0,0 +1,24 @@
+[gd_resource type="Environment" load_steps=3 format=3 uid="uid://c6gg4l7fynga2"]
+
+[sub_resource type="PhysicalSkyMaterial" id="PhysicalSkyMaterial_3gqex"]
+ground_color = Color(1, 1, 1, 1)
+
+[sub_resource type="Sky" id="Sky_tlwt5"]
+sky_material = SubResource("PhysicalSkyMaterial_3gqex")
+
+[resource]
+background_mode = 2
+background_energy_multiplier = 3.0
+sky = SubResource("Sky_tlwt5")
+tonemap_mode = 4
+glow_enabled = true
+glow_bloom = 0.1
+glow_blend_mode = 1
+fog_enabled = true
+fog_light_color = Color(0.851974, 0.909539, 1, 1)
+fog_sun_scatter = 0.15
+fog_aerial_perspective = 0.93
+fog_sky_affect = 0.0
+adjustment_enabled = true
+adjustment_contrast = 1.3
+adjustment_saturation = 1.3

grass.gdshader

@@ -30,12 +30,12 @@ void vertex() {
 	cut_height = 1.0;
 
 	// Cutting all grass on the right
-	if (NODE_POSITION_WORLD.x > 0.0) {
+	//if (NODE_POSITION_WORLD.x > 0.0) {
-		cut_height = 0.5;
+		//cut_height = 0.5;
-
+//
-		VERTEX.y = min(VERTEX.y, cut_height);
+		//VERTEX.y = min(VERTEX.y, cut_height);
-		UV.y = max(UV.y, 1.0 - cut_height);
+		//UV.y = max(UV.y, 1.0 - cut_height);
-	}
+	//}
 
 	bottom_to_top = 1.0 - UV.y;
 
@@ -72,6 +72,9 @@ void vertex() {
 }
 
 void fragment() {
+	// Correct normals on back-faces
+	if (!FRONT_FACING) NORMAL = -NORMAL;
+	
 	AO = bottom_to_top - current_wind_bend * wind_ao_affect;
 	AO_LIGHT_AFFECT = cut_height;
 

world.tscn

@@ -1,8 +1,9 @@
-[gd_scene load_steps=18 format=3 uid="uid://cvcy4ye5phhn4"]
+[gd_scene load_steps=16 format=3 uid="uid://cvcy4ye5phhn4"]
 
 [ext_resource type="ArrayMesh" uid="uid://bte61gg2ejn5e" path="res://grass-stalk.obj" id="1_4cp3x"]
 [ext_resource type="Shader" uid="uid://db6rwrkgyosy0" path="res://grass.gdshader" id="2_8rwdi"]
 [ext_resource type="Script" uid="uid://bmx385ngdvuwt" path="res://grass.gd" id="3_aqk2v"]
+[ext_resource type="Environment" uid="uid://c6gg4l7fynga2" path="res://environment.tres" id="4_aqk2v"]
 
 [sub_resource type="Gradient" id="Gradient_odt3n"]
 offsets = PackedFloat32Array(0)
@@ -61,17 +62,6 @@ buffer = PackedFloat32Array(0.703672, 0, -0.711932, 2.46375, 0, 1.001, 0, 0, 0.7
 
 [sub_resource type="SphereMesh" id="SphereMesh_tlwt5"]
 
-[sub_resource type="PhysicalSkyMaterial" id="PhysicalSkyMaterial_3gqex"]
-ground_color = Color(1, 1, 1, 1)
-energy_multiplier = 3.0
-
-[sub_resource type="Sky" id="Sky_a067n"]
-sky_material = SubResource("PhysicalSkyMaterial_3gqex")
-
-[sub_resource type="Environment" id="Environment_cjdki"]
-background_mode = 2
-sky = SubResource("Sky_a067n")
-
 [node name="World" type="Node3D"]
 
 [node name="GrassChunk" type="Node3D" parent="."]
@@ -92,9 +82,9 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.3, 0)
 mesh = SubResource("SphereMesh_tlwt5")
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
-environment = SubResource("Environment_cjdki")
+environment = ExtResource("4_aqk2v")
 
 [node name="DirectionalLight3D" type="DirectionalLight3D" parent="WorldEnvironment"]
 transform = Transform3D(-0.926267, -0.376806, -0.00684522, -0.363545, 0.888589, 0.279724, -0.0993189, 0.261587, -0.960056, -0.156811, 0.610055, 0)
-light_energy = 3.0
+light_energy = 1.5
 shadow_enabled = true